Elastic-fluid turbine.



O; JUNGGREN. ELASTIC FLUID TURBINE. APPLICATION FILED APR. Ii, 19!].

Patented May 28, 1918.

OSCAR JUNGGBEN, 0F SCHENECTADY, NEW

YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELASTIC-FLUID TURBINE.

Mum...

Specification of '1.

Application filed April 17, 191?.

To all whom it may oonamm:

Be it known that I, (lean: Jinoonnx, a citizen of the United Slides, residing at Seheneofady, 1n the county of Scheneotml State of. New York, have invented oer no new and useful lnlpros'enu-nm in l llaelie- Fluid Turhiucn, oi which the iollowing ie a, operifioul ion.

The presei'atinvention relates lo elae i1: liuid turbines and mrticula l of ihe i. A coin- ]is dug :1 plurality o d -5 or .'l ls mountcd on 1!. shall; anal worrying :uziluldv homers upon the ;wri;. lun- Will: er -h turhim i lmjwlluui Eliot" lli .ilwlifi 7 Wliooiwfl n Y whee. 1 thin as pow;

the hubs where the L'fliill'ireduced, or E hugger nun! he 111i in in the hand. i in rl'ruel'iou which will I sinner-e not up due? lo the Anni? i=3. e1 Zion,

lllll? also lilo-5e which moor (lllito {he substantial temperature changes \Tllll'il are roulinuoinsly going on. in lhe turbine d e to rluiuges in low i'ialfli: in th inn-w um. ll in" i v f 1r. lnelened in {he elmfl. the-w Inner we due to imuperoul 'e chaugien we very large. partirularly in the hulls on neeouid of lhe wheels or rcepoml ue' murli more quickly to ivlllfJEllll'llIG change; than the heavy shall, and with this arrangement a relatively heavy wheel having a strong hub is required as otherwiselho wheel if made too thin and light will distort and poshibly loosen on the shaft.

The primary object of the present invention is to provide an improved Structure in which the Wheel is flexibly or yieldingly connepted to the shaft so it is free to respond to temperature changes independently of the shaft. By this arrangement the strains due to temperature changes are practically eliminated and as a consequence thewheels or disksimey be made much lighter and thin-- ner han heretofore.

A further object of the invention is to provide an improved turbine Wheel or disk so constructed that it has a certain amount of flexibility so that when mounted on the shaft it may expand and contract under rrs Patent.

Patented May 28, 1918.

Serial No. 162,701.

rmig in sihe alruwir g, 5 indicates a a d o hrh: or Jnshs mounted there 14A, n mi iii-r11! r ng or rings of '10 l. lu' win 5* in illr; pieeent ino no aw A l}: keyed in lhe shaft. lli ln' 12 :d and Hillit'l apnrl by i ll jqr 'fi, if.

15.? out my hivention the wheeh; d3, uneoled lo the shaft by drip; or linles Whirl: extend min. other than radial and are :wude and lie in the plane or" or parallel to the whee-l. in my ili'lllfl'l fli romli'iution hose l ars, strips or links are l'ornuul by IllOflIN of areuate slots mu through llir wheel? 5 adjacent the shaft. "l'he slole r arranged on two eoin-eufrie W l eu 'h ell-i Ewingarrungged to owl-lap ihe 4pm.! helueeu [he two adjacent slots. in olhm nni'du. I provide two eoneeutrie ring; of merlzqiping areuate slots. This lmwz-i the Million of the Wheel outmwilo the rings of 5101:; ronuerled to that inside by a ring 01 short arcuaie bare. strips or links.

Referring to Fig. 1, each slot enmprises two portions 10 and 11 arranged on (llllcr out concentric rings and eonneeled at their adjacent ends by a radially extending opening 12. All the portions 10 of the slots are arranged, on one ring and all the portions- 11 on another ring, the two rings being com j centric. and the ends of adjacent slots being spaced apart a. suitable distance. By this nrrangennent it will be seen the outer'portion A of the wheel is connected to the inner portion B by nrcuate bars, strips or links'l3, the name being shown in the present instance, as being arranged on a circle concentric with the shaft.

Referring now to Fig. 3, the form of the invention here illustrated differs from that of Figs. 1 and 2 in that each arcuate slot is located entirely on the some ring instead of on two concentric rings. 1:: indicates a ring of arenate slots, arranged ctmcentric with which is a second ring of arcnatc slots lfl, the slots of ea h ring being in staggered re lalion to those of the other, so that each slot. of one ring overlaps the space between adjaccnt. slots of the other ring. This pro-- vides bars. strips or links 1? which serve to connect the portion of the wheel outside the slots l5 and .lt' to the portion inside said slots.

By these arrangements, a perfect flexibility is obtained so that the wheel or disk (3 may expand due to temperature changes independent of the shaft. As will be obvious, the (,legree of flexibility of the ar rangcment shown in Figs. 1 and 2 will be greater than that shown in. Fig. 3, as the bars, strips or links 13 are longer than the bars, strips or links 17.

Due to the above described arrangen'icnts, wheels or dislts made much lighter and thinher than heretofore may be used without danger of distortion. At the same time, the necessary s rength and rigidity in the a heel or wheels is provided.

Viewed from a broad asi cct, it will be apparent that. my improved structure embodies in substance :1 wheel or disk connectcd to theshatt bv bars, strips or links which allow a. certain amount of flexibility in a radial. direction; and viewed somewhat. more sperifically it embodies a wheel or disk formed of two concentric parts connected to each other by bars, strips or links which allow of a. certain amount of flexibility in a radial direction, and while I have de scribed the invention as embodied in a. strum tnre wherein the bars, strips or links are formed integrally with and. directly in the wheel or disk, this being the arrangement I now prefer. it will be clear that the parts may be formed separately and suitably con nected together.

In accordance with the provisions of the Patent Statutes, I have described the prin ciple of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown. is only illustrative and that the invention can be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. In an elastic fluid turbine, the combination of a shaft, a. wheel and links con meeting the wheel to the shaft forming a. flexible connection between them, said links being arranged in a plane at right angles to the shaft.

2. In an elastic fluid turbine, the combination of a shaft, :1 wheel, and links which extend in other than a radial direction connccting the wheel to the shaft, said links being arranged in a plane at right angles to the shaft.

3. In an elastic fluid turbine, the combination of a shaft, a. wheel and arcuatc links extending,- eircnmfcrentially of the shaft connecting the wheel to the shaft.

t. In an elastic finid turbine, the combination of a shaft and a wheel, said wheel being fixed on the shaft, and comprising two annular portions connected together by bars which are located in the plane of the wheel and extend in other than a. radial di rection.

In an elastic fluid turbine, the combination of a shaft and a. wheel fastened thereon, said wheel having slots in it ad jacent. the shaft to give flexibility to the wheel in a radial direction.

6. In an elastic fluid turbine, the combi nation of a shaft. and a Wheel fastened thereon, said wheel having overlapping slots in it. located adjacent the shaft.

7. In an elastic fluid turbine, the combination of a shaft and a wheel fastened thereon, said wheel having a plurality of rings of overlappingslots in it adjacent the shaft.

8. In an elastic fluid turbine, the combination of a shaft and awheel fastened thereon, said wheel having a plurality of arcuate overlapping slots arranged in 0011* centric. rings, the slots in one ring overlap ping the spaces between the slots in the other ring.

9. A turbine wheel for an elastic fluid turbine having adjacent its bore a plurality of slots forming flexible strips which permit the portion of the turbine wheel outside said slots to expand indt-ipendcntly of the portion inside said slots.

10. In an elastic fluid turbine, the combination of a shaft, a ring fixed thereon, a. bucket Wheel adjacent the ring, and bars arral'lgcd around the shaft and located in a plantat. right angles to the shaft which serve to flexibly connect the wheel to the ring. l

11. In an elastic fluid turbine, the combination of a. shaft, a ring fixed thereon, a bucket. wheel concentric with the ring, and connecting nn-inbcrs located in the plane of the wheel for flexibly connecting the Wheel. to the ring.

In witness whereof, I have hereunto set my hand this 16th day of April, 1.917.

OSCAR JUNGGREN. 

